What if things go wrong when we make mistakes? When something goes awry, we often perceive it as a coincidence, whereas if things go well, we attribute it to our existing competence. However, the reality is often the opposite.
When things go well, it's often a coincidence, but when we make a mistake, there's a reason behind it. In such situations, we should focus on identifying the problem. Do we not know the melody well enough? Are we unsure about the specific notes? Are we not hearing it accurately? Or have we forgotten that the upward jump ends on an F#?

To truly internalize a new piece, you can play the theme repeatedly until it becomes familiar. Alternatively, you can sit down and actively engage with it. Let's say bars 3 and 4 keep tripping you up. By repeating them, sometimes they'll be executed correctly, and other times they won't. This is when you need to take the time to observe, listen, and feel what's truly present or what's required to play it flawlessly. Immerse yourself in it and aim to play it flawlessly seven times. If you happen to make a mistake on the fifth attempt, start over. It may seem like a peculiar approach, but sometimes it helps to maintain focus in this way.
The problem with such melodic segments is often resolved within 30 seconds, and they rarely go wrong again. The time savings are substantial, requiring no more than a minute or two of dedicated effort.
That's why, oddly enough, I often advise my students to study less but study better.